Charles Spurgeon Commentary Deuteronomy 8:9

"a land wherein thou shalt eat bread without scarceness, thou shalt not lack anything in it; a land whose stones are iron, and out of whose hills thou mayest dig copper." — Deuteronomy 8:9 (ASV)

A land where you shall eat bread without scarcity, you shall not lack anything in it; a land whose stones are iron, and out of whose hills you may dig brass.

There are deep things hidden away in the gospel treasuries.

Silver and gold there may be none; but then, iron and copper are much more useful things, and the most useful things we will ever need in this life lie hidden beneath the surface of the gospel. If we know how to dig deep, we will be abundantly rewarded by the treasures, which we will discover.

Well now, if your experience has so changed, if you have left the fiery serpents and the howling wilderness behind you, and have come into a place of peace and enjoyment, what follows?

A land in which you shall eat bread without scarceness, you shall not lack anything in it;

When you live in communion with God, and he brings you into the full enjoyment of the covenant blessings, then there is no scarcity with you, there is no lack of anything.

A land whose stones are iron, and out of whose hills you may dig brass.

Or, copper. They had no silver and gold; but then the princes of Sheba and Seba were to offer them gifts, and bring them their gold and silver.

But if they had nothing for show, they had plenty for use, for iron is a great deal more useful metal than gold; and the copper, which they hardened into brass, was much more useful to them than silver would have been.

God will furnish you, dear brother, with all the weapons you need for the Holy War. There may be no gold and silver ornaments for your pride, but there will be iron instruments to help you in your conflict with your adversaries.